Benton, Allen H. Keys to the vertebrates of the Northeastern States (excluding birds) by Allen H. Benton and Margaret M. Stewart. - Minneapolis Burgess Pub. Co. [1964] - iv, 57 p. illus., diagrs. 28 cm. Includes bibliographies. LCCN: 64012218 //r85 Subjects--Topical Terms: Vertebrates--Identification.--Northeastern States LC Class. No.: QL607 / .B4 Dewey Class. No.: 596.0974